公开(公告)号：US3764905A

公开(公告)日：1973-10-09

申请号：US3764905D

申请日：1972-06-30

Applicant: IBM

Inventor： ZAPPE H

IPC: G01R29/08 ,  G01R13/34 ,  G01R15/18 ,  G01R19/00 ,  G01R33/035 ,  G11C11/44 ,  H03K19/195 ,  G01R27/28

CPC classification number: G01R13/342 ,  G01R15/18 ,  G01R33/0354 ,  H03K19/1952 ,  Y10S505/843

Abstract: A device and method for measurement of ultra fast waveforms with increased accuracy and storage capability. A superconducting loop contains at least one Josephson tunneling device and is located adjacent to the signal line along which travels the waveform to be measured. Magnetic flux from the waveform intercepts the loop in an amount which is dependent upon the amplitude of the waveform at any instance in time. Control means is provided to switch the Josephson tunneling device to its zero voltage state at the time the waveform is to be sampled. This traps the magnetic flux due to the waveform and the flux will remain stored in a loop as long as the Josephson tunneling device remains in its zero voltage state. A test Josephson tunnel device located adjacent to the superconducting loop can be used to detect the amount of flux trapped in the loop. Non-repetitive pulses can be sampled and the device has a possible resolution of 5 picoseconds. The bandwidth of the non-repetitive signal pulses can be 100 gHz.

Abstract translation: 一种用于测量超快速波形的设备和方法，具有更高的精度和存储能力。 超导环路包含至少一个约瑟夫逊隧道装置，并且位于与要测量的波形相交的信号线附近。 来自波形的磁通量以任何时间上的波形幅度取决于波形的截距。 提供控制装置以在波形被采样时将约瑟夫逊隧道装置切换到其零电压状态。 只要约瑟夫逊隧道装置保持在零电压状态，这个陷波由于波形而磁通将保持存储在环路中。 位于邻近超导环路的测试约瑟夫森隧道装置可用于检测回路中捕集的通量。 可以对非重复脉冲进行采样，并且器件具有5皮秒的可能分辨率。 非重复信号脉冲的带宽可以为100 gHz。

公开(公告)号：US3764863A

公开(公告)日：1973-10-09

申请号：US3764863D

申请日：1971-06-30

Applicant: IBM

Inventor： ZAPPE H

IPC: H01L39/22 ,  H01L5/06

CPC classification number: H01L39/223 ,  Y10S505/874

Abstract: A high gain Josephson junction device having an asymmetric curve of maximum Josephson current (Im) versus applied field (H). The magnetic field is proportional to the Josephson current (IJ) through the junction at each instant of time, and the constant of proportionality remains the same for each curve of Im versus H. Due to this asymmetry, a small change in magnetic control field Hc will cause a large change in maximum Josephson current, IJ. Preferred embodiments return the Josephson current in a path over the junction to produce a magnetic field penetrating the junction which is always proportional to the Josephson current.

Abstract translation: 具有最大约瑟夫逊电流（Im）与施加场（H）的不对称曲线的高增益约瑟夫逊连接装置。 在每个时刻，磁场与通过结的约瑟夫逊电流（IJ）成比例，并且Im与H的每个曲线的比例常数保持相同。由于这种不对称性，磁控制场Hc的小变化 将导致约瑟夫森最大电流IJ发生很大变化。 优选的实施例将约瑟夫逊电流返回到结点上的路径中，以产生贯穿该结的磁场，其总是与约瑟夫逊电流成比例。

公开(公告)号：US3733526A

公开(公告)日：1973-05-15

申请号：US3733526D

申请日：1970-12-31

Applicant: IBM

Inventor： ANACHER W ,  GREBE K ,  GREINER J ,  LAHIRI S ,  PARK K ,  ZAPPE H

IPC: H01L27/00 ,  H01L39/22 ,  H01L3/10

CPC classification number: H01L39/223 ,  H01L27/00 ,  Y10S505/874

Abstract: A superconducting Josephson junction tunnel device having in particular lead alloy electrodes (Pb-In and Pb-In-Sn) and a very precisely defined and dense tunnel barrier comprising an oxide of the lead alloy electrode. Such devices can be thermally cycled between liquid helium temperatures and room temperatures, and provide large tunnelling currents.

Abstract translation: 具有特别是铅合金电极（Pb-In和Pb-In-Sn）的超导约瑟夫逊结隧道装置和包含铅合金电极的氧化物的非常精确地限定且致密的隧道势垒。 这样的器件可以在液氦温度和室温之间热循环，并提供大的隧穿电流。

公开(公告)号：CA936625A

公开(公告)日：1973-11-06

申请号：CA130471

申请日：1971-12-20

Applicant: IBM

Inventor： GREBE K ,  LAHIRI S ,  ANACKER W ,  PARK K ,  GREINER J ,  ZAPPE H

IPC: H01L27/00 ,  H01L39/22

Abstract: A superconducting Josephson junction tunnel device having in particular lead alloy electrodes (Pb-In and Pb-In-Sn) and a very precisely defined and dense tunnel barrier comprising an oxide of the lead alloy electrode. Such devices can be thermally cycled between liquid helium temperatures and room temperatures, and provide large tunnelling currents.

公开(公告)号：SE318598B

公开(公告)日：1969-12-15

申请号：SE1300464

申请日：1964-10-28

Applicant: IBM

Inventor： ZAPPE H

IPC: G06G7/19 ,  G06K9/40 ,  H03D1/00 ,  H04L25/03 ,  H04L1/00

Abstract: 1,073,349. Digital calculators. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 22, 1964 [Nov. 8, 1963], No. 4304O/64. Heading G4A. [Also in Divisions G1 and H4] A data transmission system in which received signals are subject to distortion comprises an arrangement for sampling a received signal on a time sequential basis, calculating arrangements for multiplying individual samples with separate discrete values of an analysis function and a summing arrangement for combining these products to obtain an output representing the transmitted signal from which the received signal was obtained. The invention applies particularly to the transmission of digital data over telegraph lines, where considerable distortion of the digital signals may occur. Digital data #(t) (Fig. 1) after transmission over the line L appears as the distorted waveform h(t). This is fed to a delay line #, and the signals appearing from each delay element 8 of the line are multiplied in the units 1-8 with an analysis function s(t) which is predetermined to relate to a function which can be reliably interpreted and which is generated in the unit 9. The outputs from the multiplying units are added together in a'unit 10, whose output is the cross correlation function # representing the delay times. This function reliably indicates the signal input #(t) to the system. A suitable analysis function s(t) is derived as follows. If g(t) is a function determined in advance which defines the form of pulse required at the correlator output each time that #(t) (representing a single pulse) is sent on the line,theng(t)=s(t).h(t), or in terms of frequency S(W) = G(W)/HW. The Fourier components in the spectrum H(W) are obtained by developing samples from h(t) by means of tappings on a delay line (#, Fig. 3) and connecting the tappings through amplifiers (A) to grouped resistors (R m ) connected to current adders (R s ). From these adders Fourier coefficients are produced of the function H(W). The Fourier coefficients of a required function G(W) are stored in a legister (11), and the quotient G(W) is determined in a unit (12). The Fourier coefficients derived therefrom and representing S(W) are passed to a synthesizer (13), which operates in the reverse manner to the analyser described above to deliver the required function s(t) in sample form. This is recorded in a store (14). The Fourier analysis and synthesis system is then disconnected, the store is connected to the amplifiers (A) via switches (S 1 -S n ) and the delay line can then be used in producing the correlation output for any signal #(t) applied to the system.